From Parsoid page https://en.wikipedia.org/api/rest_v1/page/html/Dumb_and_Dumber, we see the following data-mw for the infobox:
data-mw='...,"gross":{"wt":"$247 million<ref name=\"mojo title"}},"i":0}}]}'
And the wikitext source for the "gross" attribute is
| gross = $247 million<ref name="mojo title|dumbanddumber">{{mojo title|dumbanddumber}}</ref>
It seems the Parsoid tokenizer incorrectly truncates the line at the first pipe char.